Amphioxus has

Options

A. one eye spot
B. two eyes spots
C. many eye spots
D. none of the these

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The question asks about Amphioxus, which is a member of the subphylum Cephalochordata within the phylum Chordata.

2. **Understand the Classification**: Amphioxus is scientifically known as Brachiostoma and is commonly referred to as a lancelet. It is important to recognize its classification to understand its characteristics.

3. **Examine the Structure**: Amphioxus possesses a notochord that extends from head to tail throughout its life. This structural feature is significant in the classification of chordates.

4. **Sensory Organs**: Amphioxus has sensory organs that include many eye spots. These eye spots are crucial for detecting light, which is essential for the organism's survival.

5. **Composition of Eye Spots**: The eye spots are made up of large single cells. The outer irregular layer of these cells functions as a lens, while a cup-shaped region within contains visual pigment, which is typically dark brown.

6. **Conclusion**: Based on the information gathered, we conclude that Amphioxus has many eye spots. Therefore, the correct answer to the question is that Amphioxus has many eye spots.

### Final Answer:
Amphioxus has many eye spots.

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